One strong advice to all mining farm owners. Be very clear with insurance companies about what exactly is your operation because most of the big names, probably wont cover you so you should not try to "make" it work. You will run into issues when you have a claim to file.

I have two of my facilities (one small 100K and other 2 mil) insured by Founder's shield and the process and support has been quick and wonderful. Well, I haven't had any failures so no claim yet but recently I reduced my coverage and these guys were super quick to handle the request and issue refund.

I dont have any experience with other insurers but will highly recommend Founders Shield.